Karaca said they had been working to establish a green campus since 2013.

"Our efforts will continue unabated," he said.

The Green Metric -- which started in 2010-- is an initiative of the University of Indonesia and its indicators include setting and infrastructure, energy and climate change, waste, water, transportation and education.

In 2010, only Ankara-based Bilkent University had made it to the list.

Netherland's University of Wageningen took first place in the list, followed by the U.K.'s University of Nottingham and the U.S.' University of California, Davis.